This research reported in this article draws upon data from the Fragile Families and Child Wellbeing study that is presented in two reports. The first of these is Maureen R. Waller, Unmarried Parents, Fragile Families: New Evidence from Oakland, Public Policy Institute of California (PPIC), San Francisco, CA, July 2001. The report appears in full on the PPIC Web site. Page numbers for quotations in the article (in square brackets following the quotation) refer to the Web version of the report. The second article is Christina Gibson, Kathryn Edin, and Sara McLanahan, "High Hopes But Even Higher Expectations: The Retreat from Marriage among Low-Income Couples," paper presented at the Annual Meeting of the Population Association of America, May 2002.